place bone-armature given selection of faces/vertices/edges for cursor
The user @batFINGER solved my problem:
&quot;If you are selecting a face / edge / vert then the mesh will need to be in edit mode. eg select a face, shift-S cursor to selected, moves cursor to face. Exit edit mode of mesh, go into edit mode of armature select bone and shift-S snap selection to cursor. (the snap options are pretty intuitive)&quot;
There are special selection tools available when you use the Shift-S hotkey that enable the fine-comb control required to move the 3d cursor to place objects.